In SL I would get service battery and I would have to restart or use Onyx to clear the cache and then it would go away. Booting into my Lion partition use to fix the problem, and now it is popping up again when I do something that might drain the battery quickly. Now it says service battery with an estimated time of 3.5 hours (which seems accurate to me). Is this a bug? I have not noticed any battery problems at all. Does it need to be recalibrated?